Tom is a match for Penny through an online dating site during the episode "The Barbarian Sublimation".
In "The Barbarian Sublimation", Sheldon signed Penny up discreetly to an online dating site when she was constantly pestering him about Age of Conan, the online multiplayer game Sheldon introduced her to when she was waiting for the Locksmith when she stuck her Volkswagen car key in the door-lock. Leslie Winkle suggested she needs to have sex in the university or "get her some". When his encounter with Blaine failed, he signed her up to headoverheelz.com. He found out her age by complimenting her saying "You're playing very well for a woman of 23?", which she corrects with "22." and he types it into her profile. He also asks her about her dream holiday and says it's for market research for the game. Finally he asks her about her sexual encounters and says she gets 75 additional quests if she answers.
Later on, Leonard walks in to the apartment and sees Tom on the sofa. Sheldon introduces them and Leonard reminds Sheldon about Blaine. Sheldon explains about the dating site before Penny comes over clearly disheveled with no make-up, messy hair and clutching her laptop. Sheldon keeps trying to introduce the two while Penny tries to get help with the game, but leaves after Sheldon doesn't answer her. After she leaves, Tom was unimpressed and says "I'm sorry Dude, she looks nothing like her picture" to which Leonard agrees.
Trivia
- We do not find out Tom's surname.
- Sheldon does for Penny what Raj and Howard will do for him later in "The Lunar Excitation" when they match Sheldon with Amy Farrah Fowler.